Abstract
In this study, a novel and highly reactive Sn–Pd catalyst supported by environmentally benign kaolinite (Sn–Pd-kaolinite) was developed and evaluated for stability for effective nitrate (NO3−) reduction in batch and continuous mode. Complete NO3− removal with fast reduction kinetics (k = 18.16 × 10−2 min−1) and 71% selectivity toward N2 were achieved by the Sn–Pd-kaolinite catalyst during batch reactions. During continuous tests, 100% NO3− removal and 80% N2 was achieved for 60 h. However, NO3− removal efficiency gradually decreased to 80% in170 h. The catalyst was then successfully regenerated in the system by increasing H2 flow which achieved a complete NO3− removal again. The metal leaching from catalyst surface was negligible (Sn 0.01% and Pd 0.006%) and the structure was stable during the continuous test, confirming that the Sn–Pd-Kaolinite catalyst had a superior reaction kinetics and operational durability.
| Original language | English |
|---|---|
| Article number | 125115 |
| Journal | Chemosphere |
| Volume | 241 |
| DOIs | |
| Publication status | Published - 2020 Feb |
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All Science Journal Classification (ASJC) codes
- Environmental Engineering
- Environmental Chemistry
- Chemistry(all)
- Pollution
- Health, Toxicology and Mutagenesis
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Stability of Sn–Pd-Kaolinite catalyst during heat treatment and nitrate reduction in continuous flow reaction. / Hamid, Shanawar; Golagana, Satwika; Han, Seunghee; Lee, Giehyeon; Babaa, Moulay Rachid; Lee, Woojin.
In: Chemosphere, Vol. 241, 125115, 02.2020.Research output: Contribution to journal › Article
TY - JOUR
T1 - Stability of Sn–Pd-Kaolinite catalyst during heat treatment and nitrate reduction in continuous flow reaction
AU - Hamid, Shanawar
AU - Golagana, Satwika
AU - Han, Seunghee
AU - Lee, Giehyeon
AU - Babaa, Moulay Rachid
AU - Lee, Woojin
PY - 2020/2
Y1 - 2020/2
N2 - In this study, a novel and highly reactive Sn–Pd catalyst supported by environmentally benign kaolinite (Sn–Pd-kaolinite) was developed and evaluated for stability for effective nitrate (NO3−) reduction in batch and continuous mode. Complete NO3− removal with fast reduction kinetics (k = 18.16 × 10−2 min−1) and 71% selectivity toward N2 were achieved by the Sn–Pd-kaolinite catalyst during batch reactions. During continuous tests, 100% NO3− removal and 80% N2 was achieved for 60 h. However, NO3− removal efficiency gradually decreased to 80% in170 h. The catalyst was then successfully regenerated in the system by increasing H2 flow which achieved a complete NO3− removal again. The metal leaching from catalyst surface was negligible (Sn 0.01% and Pd 0.006%) and the structure was stable during the continuous test, confirming that the Sn–Pd-Kaolinite catalyst had a superior reaction kinetics and operational durability.
AB - In this study, a novel and highly reactive Sn–Pd catalyst supported by environmentally benign kaolinite (Sn–Pd-kaolinite) was developed and evaluated for stability for effective nitrate (NO3−) reduction in batch and continuous mode. Complete NO3− removal with fast reduction kinetics (k = 18.16 × 10−2 min−1) and 71% selectivity toward N2 were achieved by the Sn–Pd-kaolinite catalyst during batch reactions. During continuous tests, 100% NO3− removal and 80% N2 was achieved for 60 h. However, NO3− removal efficiency gradually decreased to 80% in170 h. The catalyst was then successfully regenerated in the system by increasing H2 flow which achieved a complete NO3− removal again. The metal leaching from catalyst surface was negligible (Sn 0.01% and Pd 0.006%) and the structure was stable during the continuous test, confirming that the Sn–Pd-Kaolinite catalyst had a superior reaction kinetics and operational durability.
UR - http://www.scopus.com/inward/record.url?scp=85073361176&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85073361176&partnerID=8YFLogxK
U2 - 10.1016/j.chemosphere.2019.125115
DO - 10.1016/j.chemosphere.2019.125115
M3 - Article
AN - SCOPUS:85073361176
VL - 241
JO - Chemosphere
JF - Chemosphere
SN - 0045-6535
M1 - 125115
ER -